* use bool for 'change' as it holds a result of a boolean.
* use size_t for 'left', so it is the same as 'size' which it is
  compared to. Both are supposed to contain an unsigned value.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
---
 drivers/tty/tty_buffer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index e162318d6c31..414bb7f9155f 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -263,7 +263,8 @@ static int __tty_buffer_request_room(struct tty_port *port, size_t size,
 {
 	struct tty_bufhead *buf = &port->buf;
 	struct tty_buffer *b, *n;
-	int left, change;
+	size_t left;
+	bool change;
 
 	b = buf->tail;
 	if (!b->flags)
-- 
2.41.0